I totally figured out the blog comments problem - I uploaded the wrong file. Silly me.
On an unrelated note, people often ask me about digital cameras, so I thought I would nip this in the bud by linking to this article in the New York Times, and this article over at Digital Camera Review. Were I buying a pocket camera, this is the one I would go for.
Actually, looking closer, I'm not sure I would, as it has no optical viewfinder (you have to look at the LCD screen to take a picture). So maybe I'd get something bigger instead.